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THE INFRARED COMPANIONS OF T TAURI STARS

机译:T TAURI星的红外伴侣

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The infrared companions (IRCs) associated with several normal low-mass pre-main-sequence (T Tauri) stars pose an interesting problem for theories of binary star formation. The IRCs have very low infrared color temperatures and large infrared excesses, which have led observers to suggest that they may be less evolved objects such as protostars. This paper presents an attempt to understand the IRCs as a class by examining a broad range of observations and applying simple arguments and models. We propose that the IRCs may represent relatively normal young low-mass stars experiencing episodes of enhanced cir-cumstellar extinction, possibly due to rapid accretion of disk material perturbed by their gravitational influence at aphelion or perihelion.
机译:与几个正常的低质量主序前星(T Tauri)相关的红外伴星(IRC)对双星形成理论提出了一个有趣的问题。 IRC的红外色温非常低,并且红外过量很大,这导致观察者建议它们可能是演化较慢的物体,例如原恒星。本文通过检查广泛的观察结果并应用简单的论据和模型,提出了将IRC理解为一类的尝试。我们建议,IRCs可能代表相对正常的年轻低质量恒星,经历了Cir-cumstellar消光增强的情况,这可能是由于盘状物质的快速积聚而受到了它们在角膜缘或近日点的重力影响所扰动。

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